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Old 05-25-2014, 10:26 PM   #1
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Water heater on propane

This weekend used the water heater on propane. It has the auto light and could hear the ticking and it went through 2 start up
Then there was this " pow of lighted gss"
But it did not light.
On the panel it showed a fsult.

Turned off the switch as nd let it set .
Tried it again and it worked fine

What was the pow blow back?

Flagstaff 2012.. FR831RKSS
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Old 05-25-2014, 10:58 PM   #2
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Yes it was blow back you need to clean it. Make sure burner tube is completely clean. If it is an Atwood you can adjust the air flow.
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Old 05-26-2014, 07:41 AM   #3
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Check for mud wasps

Do a close check for mud wasps they can plug many small areas..
Trust me on this I just paid dearly at the dealer for a plugged sensor on my new on demand water heater..
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Old 05-26-2014, 02:00 PM   #4
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since someone mentioned the lp water heater.

I had both the electric and the ll on this weekend to keep the hot water longer and for some reason the pressure plug was leaking when I had both on. when I turned the lp off the water stopped leaking.


could it be that the water is getting too hot???
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Old 05-26-2014, 05:11 PM   #5
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With both LP and electric on at the same time the water heats faster and the pressure is higher. Could be considered normal for the slight leakage you noticed. Could be that the pop off valve is losing ability to hold pressure as it should. These are cheap to replace.
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Old 06-01-2014, 04:58 PM   #6
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Blew out the tube and burner. Fixed everything on LP side of the water heater

A lot of black stuff came out of the tube
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Old 06-01-2014, 06:29 PM   #7
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Quote:
Originally Posted by RVGuy1966 View Post
since someone mentioned the lp water heater.

I had both the electric and the ll on this weekend to keep the hot water longer and for some reason the pressure plug was leaking when I had both on. when I turned the lp off the water stopped leaking.


could it be that the water is getting too hot???
If I use both propane and electric heat at the same time, I always get a little drip. The valve is called the T&P (temperature and pressure) valve. I don't know if I am exceeding the pressure or temperature parameters.
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Old 06-04-2014, 08:55 AM   #8
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I am ok with a little drip as long as its not dowsing the electrical contacts which is does, and I am not changing the pressure valve as I am sure its designed to keep my water heater from going kablooey. So I will probably just use only one or the other setting going forward.
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Old 06-04-2014, 09:01 AM   #9
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I replaced my old valve after i revamped thw heater to work on ele.and propane, the old valve never leaked,the new one drips a few drops as it heats but stops. I have learned it's normal.
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Old 06-25-2014, 10:11 AM   #10
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Am I having the same problem? My heater keeps what would describe as "blowing out".

Here's video...
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Old 06-25-2014, 10:21 AM   #11
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I would say that you have an obstruction in the mixing tube, and it is diverting gas outside of it. The POP that you see is a mass of propane igniting outside the burner. Shut the gas off until you have it fixed, it is a hazardous situation.
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Old 06-26-2014, 08:17 AM   #12
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I took my air compressor and blew out the air tube going to the igniter. A lot of black partials came out .
Worked great after that
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